INTRODUCTION
1
The MkVII S-Band Trans
ceivers are avail
able in a
downmast configuration only, where the transceiver
electronics are remote from the turning mechanism, being
located in a separate enclosure located below deck.
2
The configuration, shown in Figures 1d and 2d, is
provided with a single phase mains input to the
transceiver, which provides dc supplies for the turning motor.
SYS TEM DE SCRIP TION
3
The Trans ceiver (CTX-A9) is fit ted with a log a rith mic
am pli fier with AFC and em ploys fan cool ing for the
mag ne tron and mod u la tor.
4
The magnetron energy is fed via a circulator and a
semi-rigid coaxial cable run to the rotating joint located
in the turning mechanism and onto the antenna. Received
signals from the antenna are routed via the rotating joint and
coaxial cable to the circulator. Within the transceiver the
received signals are routed from the circulator to the RF
limiter, bandpass filter and low noise front end to the
Logarithmic receiver.
5
The transceiver is normally muted whenever the
antenna ceases to rotate. Pulse jitter, muting and
sector transmission are standard facilities, with options for
pre-pulse generation and external synchronisation.
6
The transceiver can be interfaced with any of the
Nucleus Series displays. In addition, facilities are
provided for interfacing with the display via a Controller Area
Network (CAN) bus link.
Original
7d.1
May 01
KH 2020
Chap 7d
CHAPTER 7D
MKVII TRANSMITTER/RECEIVER & ANTENNA (S-BAND)
ANTENNA
GEARBOX
AZIMUTH
PCB
RF
HEAD
MAGNETRON
Tx Monitor
(OPT)
LOGARITHMIC
RECEIVER
TX MICRO-
CONTROLLER
PCB
VIDEO
IF
TO/FROM
DISPLAY
POWER
POWER
25 kW FET
MODULATOR
CD-4029
MOTOR
POWER UNIT
MAINS
INPUT
TURNING MECHANISM
(CAE-A41 OR CAE-A42)
TRANSCEIVER (CTX-A9)
EMC
FILTER
NOISE
DIODE
(OPT)
SAFETY
SWITCH
CONTROL
SOFT
START
UNIT
3 PHASE
MAINS INPUT
SYNC
Figure 1d - S-Band (CTX-A9): Block Diagram
Содержание Kelvin Hughes Nucleus 3 5000 Series
Страница 27: ...THIS PAGE IS INTENTIONALLY BLANK Sep 01 ii Amdt 1 KH 2020 Index Introduction ...
Страница 73: ...THIS PAGE IS INTENTIONALLY BLANK KH 2020 Chap 2a July 03 2a 6 Amdt 5 ...
Страница 101: ...THIS PAGE IS INTENTIONALLY BLANK May 01 3 6 Original KH 2020 Chap 3 ...
Страница 109: ...THIS PAGE INTENTIONALLY BLANK July 03 viii Amdt 5 KH 2020 Index Chap 1 3 ...
Страница 119: ...THIS PAGE IS INTENTIONALLY BLANK Sep 01 x Amdt 1 KH 2020 Contents Chap 4 5 ...
Страница 150: ...THIS PAGE IS INTENTIONALLY BLANK May 01 4b 12 Original KH 2020 Chap 4b ...
Страница 157: ...THIS PAGE IS INTENTIONALLY BLANK May 01 4c 6 Original KH 2020 Chap 4c ...
Страница 163: ...THIS PAGE IS INTENTIONALLY BLANK May 01 4c 14 Original KH 2020 Chap 4c ...
Страница 176: ...THIS PAGE IS INTENTIONALLY BLANK May 01 4c 28 Original KH 2020 Chap 4c ...
Страница 234: ...THIS PAGE IS INTENTIONALLY BLANK May 01 4f 6 Original KH 2020 Chap 4f ...
Страница 257: ...THIS PAGE IS INTENTIONALLY BLANK May 01 4f 30 Original KH 2020 Chap 4f ...
Страница 275: ...THIS PAGE IS INTENTIONALLY BLANK July 03 5 18 Amdt 5 KH 2020 Chap 5 ...
Страница 279: ...THIS PAGE IS INTENTIONALLY BLANK Sep 01 iv Amdt 1 KH 2020 Index Chap 4 5 ...
Страница 309: ...THIS PAGE IS INTENTIONALLY BLANK Sep 01 xiv Amdt 1 KH 2020 Contents Chap 7 8 ...
Страница 355: ...May 01 7c 18 Original KH 2020 Chap 7c CD 2412 Figure 15c Control PCB Links Switches Potentiometers and Test Points ...
Страница 356: ...Original 7c 19 May 01 KH 2020 Chap 7c CD 2413 Figure 16c Modulator PCB Switches Test Points ...
Страница 357: ...May 01 7c 20 Original KH 2020 Chap 7c CD 2414 Figure 17c Rx Monitor PCB Links Switches Potentiometers Test Points ...
Страница 359: ...THIS PAGE IS INTENTIONALLY BLANK May 01 7c 22 Original KH 2020 Chap 7c ...
Страница 381: ...THIS PAGE IS INTENTIONALLY BLANK Sep 01 7d 26 Amdt 1 KH 2020 Chap 7d ...
Страница 425: ...THIS PAGE IS INTENTIONALLY BLANK May 01 8a 22 Original KH 2020 Chap 8a ...
Страница 445: ...THIS PAGE INTENTIONALLY BLANK July 03 8aA 16 Amdt 5 KH 2020 Chap 8a Annex A ...
Страница 463: ...THIS PAGE IS INTENTIONALLY BLANK May 01 8c 12 Original KH 2020 Chap 8c ...
Страница 472: ...THIS PAGE IS INTENTIONALLY BLANK May 01 8c 22 Original KH 2020 Chap 8c ...
Страница 476: ...THIS PAGE IS INTENTIONALLY BLANK May 01 8d 4 Original KH 2020 Chap 8d ...
Страница 498: ...THIS PAGE IS INTENTIONALLY BLANK Original 8e 19 May 01 KH 2020 Chap 8e ...